Anti-foulingipaint



FIP'85D1 is stated: Thus I first take sulphate of zinc in z 5 parts, by measure; zinc slag finely pulverized, twenty-nine parts, by measure; metnlliezinc 4 o mixture composed of the following ingredi- 5 The ingredients of the first mixture-that is,

' to and stirred up in the second mixture of so- Britaim residing at'Londom in the county of 5 Middlesex,'England, have invented certain (which has been patented in Great Britain IO February 17, 1890, No. 2,530,) and I do hereby it appertains to make and use the same. 5

"i'lhese several ingredients are to be thorough- ANTI-FOUL PATENT OFFICE. I

" awesome ifiLFlELD DENNYS, F LONDON, ENGLAND.

ING PAINT.

SPECIFICATION a mamas ,ooauated Janua y 13,1891.

Application filed November 14, 1889- Serial No. 830. 32; (In

specimens.) Patented in England February 17, 1890, No. 2,539.

To all whom it may concern:

Be it known that I, NICHOLAS BELFIELD DENNYS, a subject of the Queen of Great new and useful Improvements in Anti-fouling Paint-s for Ships Bottoms or otherSubmerged Surfaces of Iron or other Metal or Wood,

declare the following to be a full, clear, and "exact description of the invention, such as will enable others skilled in the art to which My composition of matter to be used as an anti-fouling paint for ships bottoms or other submerged surfaces of iron or other metal or wood consists of the followin" ingredients combined, substantially in the proportions powder, tweuty-four parts, by measure; sulphate of mercury in powder, two parts by measure; oxide of iron in powder, six parts, by measure ;0xideof copperin powder, eighty-one in fine powder, seventyparta by measure."

ly mixed, andI then take or make a second cuts: Solution of tannin, forty parts; shellac varnish, weighing about nine pounds four ounces to the gallon, two hundred and fortyfour parts, and thoroughly mix the same.

the sulphate of zinc, sulphate of mercury, oxidc of iron, oxide of copper, zinc slag, and metallic zinc, all mixed together and in powder form, as deseribed-are then introduced lution of tannin and shellac varnish until the whole mass assumes the consistency of ordih desired, this my improved anti-fouling added to it additional varnish or methylated as caused, for instance, by a fall in temperature, prolonged exposure to the air, or long- .continued storage.

In using my improved paint the same should be applied over a hard dry coating or priming, preferably a preparation of red lead or of an oxide of iron; or it may be applied over ing coatings, it only being essential that the under coating or priming be hard and dry before applying my improved paint, which acts as an efiTectual anti-fouler, does not eat bottoms of steamers, and is exceedingly durable.

claim as new, and desire to secure by Letters Patent, is

The herein-described composition of matter to be used as an anti-fouling paint for ships bottoms and other submerged surfaces,

slag, metallic zings tion of t z 1 n n in, and shellac varpish, substantially in or about the pr s and prepared or mixed as specified.

presence of two witnesses.

NICHOLAS BELFIELD DENNYS.

Witnesses:

Jxo. 0. NEW,

Consul General. ()LIVER R. JOHNSON, C'glrzzsullate General I. S. A. at London, Engnary paint.

Having thus described my inyention, 115:

paint or composition may be thinned or have many of the preparations now in use asprim- In testimony whereof I aflix my signature in 75 away the surface of iron or steel applied to the consistigg otf sulphate of, i I sulphate of ,lmerc'uryfiixide of iron, 'ox'i 9 ofcopper, si o 7c spirits when the mixture is found to thicken. 

